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Finding the Fourth Proportional to 163,376.16, 225,459.14 and 91,756.28

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Solution

The fourth proportional to 163,376.16, 225,459.14 and 91,756.28 is: 126,623.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,376.16 : 225,459.14 = 91,756.28 : x
  2. Step 2: Convert to fraction form
    163,376.16/225,459.14 = 91,756.28/x
  3. Step 3: Cross multiply
    163,376.16x = 225,459.14 × 91,756.28
  4. Step 4: Simplify right side
    163,376.16x = 20,687,291,978.40
  5. Step 5: Solve for x
    x = 20,687,291,978.40/163,376.16
  6. Step 6: Final answer
    x = 126,623.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.